is an option on which the battery will optimize its charge treshold level automatically.

by default it is: 'starts charging again when battery level below 96%".

by selecting "long battery health mode"; the system will automatically switched the treshold higher or lower based on your usage, for example, leaving it plugged in all the time.

i already leave it turned on for like 6 months or more already. no ill affect is noticed. the battery keeps on charging as per usual (96%). as of right now though, i just turned that option off.

to bananaman, there is something fishy to the link that you gave me. there could be a number of reason why it happens. for example; the battery might be performing "battery recalibration/reset" function. just to be safe; i disable that feature on my computer right now.

I don't use this option either. I've got my charging levels set to the same as MidnightSun (40% and 95%).

I do know that with some business type notebooks, such as Sony, you aren't able to set specific charging thresholds. So in those cases, I'd definitely recommend using the manufacturer's battery utility (ie. Sony's Battery Care), which has similar functionality to Long Battery Health mode.